Diffusion of responsibility

Diffusion of responsibility is a sociopsychological phenomenon whereby a person is less likely to take responsibility for action or inaction when others are present. Considered a form of attribution, the individual assumes that others either are responsible for taking action or have already done so. The phenomenon tends to occur in groups of people above a certain critical size and when responsibility is not explicitly assigned. It rarely occurs when the person is alone and diffusion increases with groups of three or more.

Diffusion of responsibility occurs in large group settings and under both prosocial and antisocial conditions. In prosocial situations, individuals' willingness to intervene or assist someone in need is inhibited by the presence of other people. The individual is under the belief that other people present will or should intervene. Thus, the individual does not perceive it as his or her responsibility to take action. This will not happen if the individual believes that they are the only one aware of the situation. If a bystander is deciding how to help, they may abstain from doing so if they believe that they lack the competence to be of aid. Individuals may become reluctant to provide help for fear of how observers will view them. The Murder of Kitty Genovese is the classic case study for diffusion of responsibility in a prosocial situation. It has been demonstrated that the likelihood of a person offering help decreases as the number of observers present increases. This is known as the bystander effect. In addition, diffusion of responsibility is more likely to occur under conditions of anonymity. In prosocial situations, individuals are less likely to intervene when they do not know the victim personally. Instead, they believe that someone who has a relationship with the victim will assist. In antisocial situations, negative behaviors are more likely to be carried out when the person is in a group of similarly motivated individuals. The behavior is driven by the deindividuating effects of group membership and the diffusion of feelings of personal responsibility for the consequences. As part of this process, individuals become less self-aware and feel an increased sense of anonymity. As a result, they are less likely to feel responsible for any antisocial behavior performed by their group. Diffusion of responsibility is also a causal factor governing much crowd behavior, as well as risk-taking in groups.

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